CN109533247B - Piezoelectric vibration suppression system and method for marine propeller blade hydro-elastic vibration - Google Patents
Piezoelectric vibration suppression system and method for marine propeller blade hydro-elastic vibration Download PDFInfo
- Publication number
- CN109533247B CN109533247B CN201811374346.2A CN201811374346A CN109533247B CN 109533247 B CN109533247 B CN 109533247B CN 201811374346 A CN201811374346 A CN 201811374346A CN 109533247 B CN109533247 B CN 109533247B
- Authority
- CN
- China
- Prior art keywords
- vibration
- piezoelectric
- propeller blade
- amplitude
- conversion module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/15—Propellers having vibration damping means
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a piezoelectric vibration suppression system and a piezoelectric vibration suppression method for marine propeller blade water elastic vibration, wherein the piezoelectric vibration suppression system comprises a propeller blade, a piezoelectric sensing actuation integrated sheet arranged at the blade tip of the propeller blade, a laser vibration meter, a spectrum analyzer, a computer, a signal processing and A/D conversion module, a single chip microcomputer, an amplitude comparison and D/A conversion module, a reverse excitation module, a charge amplifier and a piezoelectric shunt circuit, wherein the piezoelectric sensing actuation integrated sheet comprises a piezoelectric sensing sheet arranged at the central position and a piezoelectric actuation sheet uniformly arranged around the piezoelectric sensing sheet, and the piezoelectric sensing actuation integrated sheet is designed for releasing the propeller blade; the vibration suppression method comprises the steps of comparing the amplitude of a vibration signal of the propeller blade measured by a laser vibration meter and a piezoelectric sensing piece with the specified amplitude, and selectively realizing passive suppression through a piezoelectric shunt circuit or realizing active suppression by combining a reverse excitation module and a charge amplifier; the invention has good popularization and application prospect.
Description
Technical Field
The invention belongs to the technical field of vibration suppression, and particularly relates to a piezoelectric vibration suppression system and a piezoelectric vibration suppression method for marine propeller blade hydro-elastic vibration.
Background
The hydro-elastic vibration of the propeller is one of factors influencing the performance stability of the marine propeller, and for the vibration of the propeller, the vibration suppression method commonly used at present mainly has three forms: (1) the structure of the propeller is improved, wherein the structure comprises that sawtooth-shaped blade tips are adopted, the edge cutting treatment is carried out on the propeller, a large side inclined propeller is selected, and propeller blades are added; (2) the propeller is made of composite materials, or composite material coatings are added on the surfaces of the propeller blades; (3) and adding an external vibration damper, including using a dynamic vibration absorber, a hydraulic vibration damper or adding a rubber damper and the like. The use of the above vibration damping system suppresses the vibration of the propeller to some extent, but at the same time, increases the manufacturing process, manufacturing cost, or external volume of the propeller. Therefore, under the condition of not changing the propeller structure and basically not increasing the external mass and the volume, the important practical significance is realized by exploring a new vibration suppression mode to solve the problem of the hydro-elastic vibration of the propeller.
Disclosure of Invention
The invention mainly aims to provide a piezoelectric vibration suppression system and a piezoelectric vibration suppression method for marine propeller blade hydro-elastic vibration, and the piezoelectric vibration suppression system and the piezoelectric vibration suppression method have low energy consumption and good vibration suppression effect; the propeller vibration suppression device is used for solving the problems of complex manufacturing process and high manufacturing cost of the propeller with the vibration suppression function in the prior art; the specific technical scheme is as follows:
on one hand, the piezoelectric vibration suppression system for the marine propeller blade hydro-elastic vibration comprises a propeller blade, a piezoelectric sensing actuation integrated chip arranged at the blade tip of the propeller blade, a laser vibration meter, a spectrum analyzer, a computer, a signal processing and A/D conversion module, a singlechip, an amplitude comparison and D/A conversion module, a reverse excitation signal module, a charge amplifier and a piezoelectric shunt circuit, wherein, the piezoelectric sensing actuation integrated chip comprises a piezoelectric sensing chip arranged at the central position and a piezoelectric actuation chip uniformly surrounding the piezoelectric sensing chip, the piezoelectric actuator is used for generating a reverse vibration signal to counteract partial vibration of the propeller blades, the piezoelectric sensing piece is used for monitoring the vibration conditions of the propeller blade and the piezoelectric actuating piece and transmitting the vibration conditions to the signal processing and A/D conversion module in an electric signal mode; the signal processing and A/D conversion module is used for processing the electric signal and performing A/D conversion operation on the electric signal;
the laser vibration meter is connected with the piezoelectric actuating piece and the spectrum analyzer, the laser vibration meter is used for collecting vibration signals of the propeller blades and sending the vibration signals to the spectrum analyzer, and the spectrum analyzer is also connected with the piezoelectric sensing piece and the computer, is used for processing the electric signals and the vibration signals, and is displayed and processed by the computer;
the amplitude comparison and D/A conversion module is connected with the piezoelectric shunt circuit, the reverse excitation signal module and the single chip microcomputer, the piezoelectric shunt circuit is connected with the piezoelectric actuating piece, and the piezoelectric shunt circuit is used for realizing passive suppression operation on the propeller blades; the charge amplifier is connected with the reverse excitation signal module and the piezoelectric actuating piece, and the reverse excitation signal module is used for sending a reverse excitation signal to the charge amplifier and acting on the piezoelectric actuating piece after being amplified by the charge amplifier to realize the active inhibition operation of the spiral blade; the single chip microcomputer is connected with the signal processing and A/D conversion module and a computer, and the single chip microcomputer processes the signal processing and A/D conversion moduleThe electric signal is transmitted to the amplitude comparison and D/A conversion module, and the amplitude comparison D/A conversion module is used for comparing the amplitude A of the electric signalTComparing the amplitude with the set amplitude region [ A ] in the D/A conversion modulem,AC]And carrying out comparison and D/A conversion operation, and simultaneously acquiring and storing the data of the electric signals passing through the singlechip by the computer.
Preferably, the piezoelectric shunt circuit comprises variable resistors R connected in seriesPAnd a variable negative capacitance-CrAnd an electronic switch, the variable resistor RPAnd a variable negative capacitance-CrFor dissipating energy generated by the vibration of the propeller blades.
Preferably, the piezoelectric sensing actuation integrated chip and the propeller blade have the same outer contour, and the piezoelectric sensing actuation integrated chip is of a propeller blade imitating structure.
Preferably, the piezoelectric sensing piece is of a circular structure, the piezoelectric actuating piece is of an irregular shape, and the irregular shape is uniformly distributed on the circular structure.
In another aspect, a method for suppressing vibration of a piezoelectric vibration suppression system for marine propeller blade hydro-elastic vibration is provided, which is applied to the piezoelectric vibration suppression system for marine propeller blade hydro-elastic vibration, and comprises the steps of:
s1, setting the amplitude value to be [ A ] in the amplitude value comparison and D/A conversion modulem,AC]The amplitude region of (a);
s2, controlling the propeller blades to rotate, measuring the vibration signals of the propeller blades through the laser vibration meter, transmitting the vibration signals to the spectrum analyzer, and analyzing and processing the vibration signals by the computer; meanwhile, the signal processing and A/D conversion module receives an electric signal obtained by monitoring the piezoelectric sensing piece, analyzes and performs A/D conversion operation, and then transmits the electric signal to the singlechip;
s3, the single chip microcomputer transmits the electric signal to the amplitude comparison and D/A conversion module, and compares the amplitude A of the electric signalTAnd setting the amplitude size region [ A ]m,AC]And selecting a vibration suppression mode for the propeller blades according to the comparison result.
Preferably, in step S3, if A ism<AT<ACThe single chip microcomputer controls the piezoelectric shunt circuit to suppress the vibration of the propeller blade, so that the passive suppression of the propeller blade is realized; if AT>ACAnd the single chip microcomputer controls the reverse excitation signal module to send an excitation signal, and the vibration of the propeller blade is suppressed after the excitation signal is amplified by the charge amplifier, so that the active suppression of the propeller blade is realized.
Preferably, if the amplitude A of the electrical signal isTIs reduced to A during the active inhibition processm<AT<ACThe vibration suppression method of the piezoelectric vibration suppression system is changed from active suppression to passive suppression.
Preferably, in step S2, the method further includes the step of comparing the vibration signal transmitted to the spectrum analyzer by the laser vibration meter at the same time with the vibration signal of the propeller blade measured by the laser vibration meter in real time, so as to calibrate the vibration displacement of the piezoelectric sensing piece.
The invention relates to a piezoelectric vibration suppression system and a piezoelectric vibration suppression method for marine propeller blade hydro-elastic vibration.A piezoelectric sensing actuation integrated chip is arranged at the blade tip of a propeller blade and is matched with a laser vibration meter, a spectrum analyzer, a computer, a singlechip, a signal processing and A/D conversion module, an amplitude comparison and D/A conversion module, a reverse excitation signal module, a charge amplifier and a piezoelectric shunt circuit to form the piezoelectric vibration suppression system; compared with the prior art, the piezoelectric passive vibration suppression and piezoelectric active vibration suppression are applied to the vibration suppression of the marine propeller blade, the vibration suppression system automatically selects a corresponding vibration suppression mode according to different vibration amplitudes, the maximum amplitude vibration suppression of the propeller blade vibration can be realized, the blade-imitated piezoelectric sensing actuation integration piece compactly integrates the piezoelectric sensing piece and the piezoelectric actuation piece together, one piezoelectric sensing piece is matched with four piezoelectric actuation pieces to work, the variable resistance and variable negative capacitance structure of the piezoelectric shunt circuit can adjust the vibration suppression range of the piezoelectric passive vibration suppression, the stable work of the passive vibration suppression under multiple working conditions is realized, and the popularization value is good.
Drawings
FIG. 1 is a block diagram of a piezoelectric vibration suppression system for marine propeller hydro-elastic vibration according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a distribution of piezoelectric sensing actuator chips on a propeller blade according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a structure of the electric sensor actuator wafer according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an implementation process of a vibration suppression method of the piezoelectric vibration suppression system in the embodiment of the invention.
And (3) identification and explanation: 1-propeller blade, 2-piezoelectric sensing actuating integrated chip, 3-laser vibration meter, 4-spectrum analyzer, 5-computer, 6-signal processing and A/D conversion module, 7-single chip, 8-amplitude comparison and D/A conversion module, 9-reverse excitation signal module, 10-charge amplifier, 11-piezoelectric shunt circuit;
2-1: piezoelectric sensor sheet, 2-2: a piezoelectric actuator is provided.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
Example one
With reference to fig. 1 to 3, in an embodiment of the present invention, a piezoelectric vibration suppression system for marine propeller blade hydro-elastic vibration is provided, the piezoelectric vibration suppression system includes a propeller blade 1, a piezoelectric sensing actuation integrated chip 2 mounted on a tip of the propeller blade, a laser vibration meter 3, a spectrum analyzer 4, a computer 5, a signal processing and a/D conversion module 6, a single chip microcomputer 7, an amplitude comparison and D/a conversion module 8, a reverse excitation signal module 9, a charge amplifier 10, and a piezoelectric shunt circuit 11, wherein the piezoelectric sensing actuation integrated chip 2 includes a piezoelectric sensing chip 2-1 disposed at a central position and a piezoelectric actuation chip 2-2 uniformly disposed around the piezoelectric sensing chipThe piezoelectric actuating piece 2-2 is used for generating a reverse vibration signal to counteract partial vibration of the propeller blade 1, and the piezoelectric sensing piece 2-1 is used for monitoring the vibration conditions of the propeller blade 1 and the piezoelectric actuating piece 2-2 and transmitting the vibration conditions to the signal processing and A/D conversion module 6 in an electric signal mode; the signal processing and A/D conversion module 6 is used for processing the electric signals and performing A/D conversion operation on the electric signals; the laser vibration meter 3 is connected with the piezoelectric actuating piece 2-2 and the spectrum analyzer 4, the laser vibration meter 3 is used for collecting vibration signals of the propeller blade 1 and sending the vibration signals to the spectrum analyzer, and the spectrum analyzer is also connected with the piezoelectric sensing piece 2-1 and the computer 5 and used for processing electric signals and vibration signals and displaying and processing the electric signals and the vibration signals through the computer 5; the amplitude comparison and D/A conversion module 8 is connected with a piezoelectric shunt circuit 11, a reverse excitation signal module 9 and a single chip microcomputer 7, the piezoelectric shunt circuit 11 is connected with 2-2 piezoelectric actuators, and the piezoelectric shunt circuit 11 is used for achieving passive suppression operation on the propeller blade 1; the charge amplifier 10 is connected with the reverse excitation signal module 9 and the piezoelectric actuating piece 2-2, the reverse excitation signal module is used for sending a reverse excitation signal to the charge amplifier, and the reverse excitation signal is amplified by the charge amplifier 10 and then acts on the piezoelectric actuating piece 2-2 to realize the active suppression operation on the spiral driving blade 1; the singlechip 7 is connected with the signal processing and A/D conversion module 6 and the computer 5, the singlechip 7 transmits the electric signal processed by the signal processing and A/D conversion module 6 to the amplitude comparison and D/A conversion module 8, and the amplitude comparison D/A conversion module 8 is used for comparing the amplitude A of the electric signalTComparing with amplitude value the amplitude value area [ A ] set in D/A conversion module 8m,AC]And carrying out comparison and D/A conversion operation, and simultaneously, acquiring and storing the electric signal data passing through the singlechip 7 by the computer 5.
Specifically, the piezoelectric shunt circuit 11 is provided with variable resistors R connected in seriesPAnd a variable negative capacitance-CrAnd electronic switching if the amplitude is ATSatisfies the condition Am<AT<ACThe electronic switch is closed, otherwise, the electronic switch is opened; and when the electronic switch is closed, the piezoelectric shunt circuit 11 is conducted, the piezoelectric actuating piece 2-2 vibrates along with the propeller blade 1, and the vibration enables the piezoelectric actuating piece2-2 generating electric current, converting the vibration energy into electric energy, the electric current flowing through the variable resistor RPAnd a variable negative capacitance-CrTime, variable resistance RPHeating and consuming electric energy, variable negative capacitance-CrElectric energy is consumed through charging and discharging, and vibration energy is indirectly consumed, so that the passive vibration suppression effect is achieved; and can be changed by changing the variable resistance RPResistance value of and variable negative capacitance-CrThe passive vibration suppression effect of the piezoelectric shunt circuit 11 is adjusted according to the capacitance value, so that the vibration suppression of the propeller blade 1 under different working environments is adapted, and the propeller blade 1 is in a proper vibration amplitude range.
In the embodiment of the invention, in order to ensure that the vibration of the propeller blade 1 is accurately monitored and simultaneously the piezoelectric sensing actuation integrated chip 2 can be matched with the propeller blade 1, the outer contour of the piezoelectric sensing actuation integrated chip 2 is set to be consistent with that of the propeller blade 1, namely the piezoelectric sensing actuation integrated chip 2 is in a propeller blade imitating structure; meanwhile, the piezoelectric sensing piece 2-1 is arranged into a circular structure, the piezoelectric actuating piece 2-2 is arranged into an irregular shape, and the irregular shape is uniformly distributed on the circular structure.
Example two
Referring to fig. 4, in the embodiment of the present invention, there is provided a vibration suppression method for a marine propeller blade hydro-elastic vibration piezoelectric vibration suppression system, which is applied to the marine propeller blade hydro-elastic vibration piezoelectric vibration suppression system, and the vibration suppression method is implemented by the following specific processes:
first, when the propeller blades 1 are vibrated, the amplitude comparison and D/A conversion module 8 sets the amplitude to [ A ]m,AC]The amplitude region of (a).
Then, in the vibration process of the propeller blade 1, measuring a vibration signal of the propeller blade through a laser vibration meter 3, transmitting the vibration signal to a spectrum analyzer 4, and analyzing and processing the vibration signal by a computer 5; meanwhile, the signal processing and A/D conversion module 6 receives the electric signal obtained by monitoring the piezoelectric sensing piece, analyzes and carries out A/D conversion operation and then transmits the electric signal to the singlechip 7; and transmits the laser vibration meter 3 to the frequency spectrum at the same timeComparing the vibration signal of the analyzer 4 with the vibration signal of the propeller blade 1 measured by the laser vibration meter 3 in real time to realize the calibration of the vibration displacement of the piezoelectric sensing piece 2-2; then, the single chip 7 transmits the electric signal to the amplitude comparison and D/A conversion module 8, and the amplitude comparison and D/A conversion module 8 compares the amplitude A of the electric signalTAnd set to the size of [ Am,AC]The amplitude region of (a); and finally, selecting a vibration suppression mode for the propeller blade 1 according to the comparison result, specifically comprising the following steps: if Am<AT<ACIf so, the singlechip 7 controls the piezoelectric shunt circuit 11 to inhibit the vibration of the 1 propeller blade 1, so as to realize the passive inhibition operation of the 1 propeller blade 1; if AT>ACIf the single chip microcomputer 7 controls the reverse excitation signal module 9 to generate an excitation signal and transmit the excitation signal to the charge amplifier 10, the vibration of the propeller blade 1 is suppressed after the excitation signal is amplified by the charge amplifier 10, and the active suppression operation of the propeller blade 1 is realized; and if the amplitude of the electrical signal is ATDecrease to A in the course of active inhibitionm<AT<ACThen the vibration suppression method of the piezoelectric vibration suppression system is changed from active suppression to passive suppression; for example, set AmIs 0.01mm, ACIs 0.1mm, if the vibration amplitude A of the propeller blade 1 is at this timeT0.5mm, the piezoelectric vibration suppression system for the hydro-elastic vibration of the propeller blade firstly can carry out continuous and cyclic active vibration suppression until ATReducing the amplitude to be less than 0.1mm, then enabling the piezoelectric vibration suppression system to enter a passive vibration suppression link, finishing the work of the vibration suppression system when the amplitude of the propeller is less than 0.01mm after passive vibration suppression, and otherwise, further performing passive vibration suppression operation.
The invention relates to a piezoelectric vibration suppression system and a piezoelectric vibration suppression method for marine propeller blade hydro-elastic vibration.A piezoelectric sensing actuation integrated chip is arranged at the blade tip of a propeller blade and is matched with a laser vibration meter, a spectrum analyzer, a computer, a singlechip, a signal processing and A/D conversion module, an amplitude comparison and D/A conversion module, a reverse excitation signal module, a charge amplifier and a piezoelectric shunt circuit to form the piezoelectric vibration suppression system; compared with the prior art, the piezoelectric passive vibration suppression and piezoelectric active vibration suppression are applied to the vibration suppression of the marine propeller blade, the vibration suppression system automatically selects a corresponding vibration suppression mode according to different vibration amplitudes, the maximum amplitude vibration suppression of the propeller blade vibration can be realized, the blade-imitated piezoelectric sensing actuation integration piece compactly integrates the piezoelectric sensing piece and the piezoelectric actuation piece together, one piezoelectric sensing piece is matched with four piezoelectric actuation pieces to work, the variable resistance and variable negative capacitance structure of the piezoelectric shunt circuit can adjust the vibration suppression range of the piezoelectric passive vibration suppression, the stable work of the passive vibration suppression under multiple working conditions is realized, and the popularization value is good.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent changes may be made in some of the features of the embodiments described above. All equivalent structures made by using the contents of the specification and the attached drawings of the invention can be directly or indirectly applied to other related technical fields, and are also within the protection scope of the patent of the invention.
Claims (8)
1. The piezoelectric vibration suppression system for marine propeller blade hydro-elastic vibration is characterized by comprising a propeller blade, a piezoelectric sensing actuation integrated chip arranged at the blade tip of the propeller blade, a laser vibration meter, a spectrum analyzer, a computer, a signal processing and A/D conversion module, a singlechip, an amplitude comparison and D/A conversion module, a reverse excitation signal module, a charge amplifier and a piezoelectric shunt circuit, wherein, the piezoelectric sensing actuation integrated chip comprises a piezoelectric sensing chip arranged at the central position and a piezoelectric actuation chip uniformly surrounding the piezoelectric sensing chip, the piezoelectric actuator is used for generating a reverse vibration signal to counteract partial vibration of the propeller blades, the piezoelectric sensing piece is used for monitoring the vibration conditions of the propeller blade and the piezoelectric actuating piece and transmitting the vibration conditions to the signal processing and A/D conversion module in an electric signal mode; the signal processing and A/D conversion module is used for processing the electric signal and performing A/D conversion operation on the electric signal;
the laser vibration meter is connected with the piezoelectric actuating piece and the spectrum analyzer, the laser vibration meter is used for collecting vibration signals of the propeller blades and sending the vibration signals to the spectrum analyzer, and the spectrum analyzer is also connected with the piezoelectric sensing piece and the computer, is used for processing the electric signals and the vibration signals, and is displayed and processed by the computer;
the amplitude comparison and D/A conversion module is connected with the piezoelectric shunt circuit, the reverse excitation signal module and the single chip microcomputer, the piezoelectric shunt circuit is connected with the piezoelectric actuating piece, and the piezoelectric shunt circuit is used for realizing passive suppression operation on the propeller blades; the charge amplifier is connected with the reverse excitation signal module and the piezoelectric actuating piece, and the reverse excitation signal module is used for sending a reverse excitation signal to the charge amplifier and acting on the piezoelectric actuating piece after being amplified by the charge amplifier to realize the active inhibition operation of the spiral blade; the single chip microcomputer is connected with the signal processing and A/D conversion module and a computer, the single chip microcomputer transmits the electric signals processed by the signal processing and A/D conversion module to the amplitude comparison and D/A conversion module, the amplitude comparison D/A conversion module compares the amplitude AT of the electric signals with an amplitude size area [ Am, AC ] set in the amplitude comparison D/A conversion module and performs D/A conversion operation, and meanwhile, the computer collects and stores data of the electric signals passing through the single chip microcomputer.
2. A piezoelectric vibration suppression system for marine propeller blade hydroelastic vibrations as defined in claim 1, including a series connection of variable resistors R on said piezoelectric shunt circuitPAnd a variable negative capacitance-CrAnd an electronic switch, the variable resistor RPAnd a variable negative capacitance-CrFor dissipating energy generated by the vibration of the propeller blades.
3. The piezoelectric vibration suppression system for marine propeller blade hydro-elastic vibration according to claim 1, wherein the piezoelectric sensing actuation chip has the same outer contour as the propeller blade, and the piezoelectric sensing actuation chip is a propeller blade-like structure.
4. The piezoelectric vibration suppression system for marine propeller blade hydroelastic vibrations according to claim 1, wherein said piezoelectric sensing patch has a circular structure, said piezoelectric actuator patch has an irregular shape, and said irregular shape is uniformly distributed on said circular structure.
5. The vibration suppression method of the piezoelectric vibration suppression system for the marine propeller blade hydro-elastic vibration is applied to the piezoelectric vibration suppression system for the marine propeller blade hydro-elastic vibration of any one of claims 1 to 4, and is characterized by comprising the following steps of:
s1, setting the amplitude value to be [ A ] in the amplitude value comparison and D/A conversion modulem,AC]The amplitude region of (a);
s2, controlling the propeller blades to rotate, measuring the vibration signals of the propeller blades through the laser vibration meter, transmitting the vibration signals to the spectrum analyzer, and analyzing and processing the vibration signals by the computer; meanwhile, the signal processing and A/D conversion module receives an electric signal obtained by monitoring the piezoelectric sensing piece, analyzes and performs A/D conversion operation, and then transmits the electric signal to the singlechip;
s3, the single chip microcomputer transmits the electric signal to the amplitude comparison and D/A conversion module, and compares the amplitude A of the electric signalTAnd setting the amplitude size region [ A ]m,AC]And selecting a vibration suppression mode for the propeller blades according to the comparison result.
6. The vibration suppressing method of a piezoelectric vibration suppressing system for marine propeller blades hydro-elastic vibration according to claim 5, wherein in step S3, if A ism<AT<ACThe single chip microcomputer controls the piezoelectric shunt circuit to suppress the vibration of the propeller blade, so that the passive suppression of the propeller blade is realized; if it isAT>ACAnd the single chip microcomputer controls the reverse excitation signal module to send an excitation signal, and the vibration of the propeller blade is suppressed after the excitation signal is amplified by the charge amplifier, so that the active suppression of the propeller blade is realized.
7. A method of suppressing vibration of a piezoelectric vibration suppressing system for marine propeller blades according to claim 5, wherein if said electric signal has an amplitude ATIs reduced to A during the active inhibition processm<AT<ACThe vibration suppression method of the piezoelectric vibration suppression system is changed from active suppression to passive suppression.
8. The method for suppressing vibration of a piezoelectric vibration suppressing system for marine propeller blade water elastic vibration according to claim 5, further comprising a step of comparing a vibration signal transmitted from said laser vibration meter to said spectrum analyzer at the same time with a vibration signal of said propeller blade measured by said laser vibration meter in real time to calibrate a vibration displacement of said piezoelectric sensing piece at step S2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811374346.2A CN109533247B (en) | 2018-11-19 | 2018-11-19 | Piezoelectric vibration suppression system and method for marine propeller blade hydro-elastic vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811374346.2A CN109533247B (en) | 2018-11-19 | 2018-11-19 | Piezoelectric vibration suppression system and method for marine propeller blade hydro-elastic vibration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109533247A CN109533247A (en) | 2019-03-29 |
| CN109533247B true CN109533247B (en) | 2020-09-01 |
Family
ID=65848223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811374346.2A Active CN109533247B (en) | 2018-11-19 | 2018-11-19 | Piezoelectric vibration suppression system and method for marine propeller blade hydro-elastic vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109533247B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021046933A (en) * | 2019-09-20 | 2021-03-25 | 三菱重工業株式会社 | Vibration control system, structure, marine vessel, vibration control method and vibration control program |
| CN110888464B (en) * | 2019-11-12 | 2021-06-04 | 上海交通大学 | Longitudinal and transverse multi-mode vibration control device and method for variable-speed propeller shaft system |
| CN115021610B (en) * | 2022-05-26 | 2024-05-28 | 南京航空航天大学 | Piezoelectric active vibration suppression rod with space structure and working method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897318B (en) * | 2012-10-24 | 2015-08-19 | 哈尔滨工业大学 | A kind of blade for lifting airscrew vibration control |
| CN103433516B (en) * | 2013-08-29 | 2016-05-04 | 上海交通大学 | A kind of turning Flutter Suppression device based on Piezoelectric Ceramic |
| CN105216998B (en) * | 2015-11-16 | 2017-06-20 | 哈尔滨工业大学 | A kind of marine propeller for reducing noise |
| CN105784313B (en) * | 2016-03-01 | 2019-03-26 | 中国航天空气动力技术研究院 | A kind of wind tunnel experiment strut Vibration Suppression System and method based on piezo technology |
| CN106884618B (en) * | 2017-03-09 | 2018-09-14 | 西南石油大学 | A kind of rotary propeller type synchronous generator that installing piezoelectric patches and vibration-repressing device and method |
| CN207178106U (en) * | 2017-09-05 | 2018-04-03 | 山东科技大学 | A kind of novel wind power generator blade Flutter Suppression system |
| CN108827587B (en) * | 2018-06-01 | 2019-08-13 | 大连理工大学 | A kind of stack piezoelectric ceramic actuator output performance test method |
-
2018
- 2018-11-19 CN CN201811374346.2A patent/CN109533247B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109533247A (en) | 2019-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109533247B (en) | Piezoelectric vibration suppression system and method for marine propeller blade hydro-elastic vibration | |
| Xue et al. | Broadband piezoelectric energy harvesting devices using multiple bimorphs with different operating frequencies | |
| Singh et al. | Piezoelectric vibration energy harvesting system with an adaptive frequency tuning mechanism for intelligent tires | |
| CN104022685B (en) | The frequency modulation array piezoelectric cantilever prisoner applying to piezoelectric harvester can method | |
| CN108007557A (en) | A kind of method and apparatus of lookup resonant frequency point for transducer | |
| MXPA00012619A (en) | Measuring the speed of sound of a gas. | |
| CN113295359B (en) | Simulation test device for inhibiting ejector supporting plate vibration and vibration inhibition method | |
| CN108882108A (en) | It is applicable in the impedance matching system and its matching process of Yu Haiyang communication electroacoustic transducer | |
| AU2005334984B2 (en) | Macrosonic generator for the air-based industrial defoaming of liquids | |
| CN101299033A (en) | Measuring system and method for automatically measuring audio internal friction | |
| Khmelev et al. | Practical investigations of the method for indirect control of acoustic load parameters | |
| Bhuvana et al. | Design and analysis of piezoelectric cantilever based vibration sensor | |
| Zhao et al. | Modeling and Experiment of a V‐Shaped Piezoelectric Energy Harvester | |
| KR101880146B1 (en) | Battery management system having active and passive cell balancing circuit, being controlled by adoptive PWM control | |
| CN116448216B (en) | Program-controlled ultrasonic liquid level meter transmitting circuit, receiving circuit and ranging system | |
| CN100447576C (en) | Driver of resonant transducer and signal collector | |
| MXPA00012432A (en) | Synthesising a sine wave. | |
| Pan et al. | A piezoelectric wind energy harvesting device with right-angle cantilever beam | |
| MXPA00012334A (en) | Method and apparatus for determining a frequency at which a resonator resonates. | |
| CN210839392U (en) | Piezoelectric motor device and electronic device | |
| Alrashdan et al. | Modeling and optimization of frequency tunable piezoelectric micro power generator | |
| Zhao et al. | Design of surface acoustic wave parafoil riser tension sensor | |
| Albareda et al. | Intermodulation measurement of nonlinearities in piezoceramic resonators | |
| Long et al. | A Low-Power Direct Adaptive SSDV Piezoelectric Vibration Control Circuit | |
| Makihara et al. | Self-reliant wireless health monitoring based on tuned-mass-damper mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |